Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Element or attachment – not elsewhere specified
Patent
1984-05-07
1986-07-22
Word, A. Hugo
Environmental heating and cooling; fluid handling and sanitary e
Heating or cooling
Element or attachment, not elsewhere specified
D23 10
Patent
active
D02847850
REFERENCES:
patent: D157045 (1950-01-01), Heick
patent: 1613336 (1927-01-01), Thompson
patent: 1743537 (1930-01-01), Freese
patent: 2746792 (1956-05-01), Hough
patent: 3067950 (1962-12-01), Goldman
"Allenco" Watering Equipment Catalogue, p. 11-"Hartford" Spike Sprinkler.
Lemkin Jack L.
Peterson Carl A.
Holt Harold J.
Raden James B.
The O.M. Scott & Sons Company
Vinson Brian N.
Word A. Hugo
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